I guess my contention is that if sf/f is more than special effects or worldbuilding, why isn't it popular in theater? Basically, why aren't there more District 9s (or, you know, movies that are like District 9, except they don't suck )? And why are there almost no serious sf/f plays/musicals?

If one of the powerful abilities of sf/f is that by removing preconceptions of our world, it allows us to view certain truths about humanity, why isn't that reflected in other media? Maybe because the effort of removing preconceptions of our world takes so much time and worldbuilding, which isn't conducive to theater. But I'm pretty sure Larry would dispute that if he and I would stop arguing about the importance of theater.

I suppose I'm issuing a challenge of sorts to the stalwart defenders of sf/f. If the best of the genre is more than worldbuilding, if it focuses so heavily on character development, for what reason is it that sf/f doesn't show up in a medium that is primarily dedicated to character development?

There's at least one critically acclaimed sf/f play. I think Waiting for Godot is undeniably fantasy. I want to know why there aren't more Godots.